Flow-regulating device.



N. S. TWIFOBD, DECD.

e. A. Twlroxn, ADMINISTMTBIX. FLOW BEGULATING DEVIGB. APPLIATIoN FILED001212, 1907.

Patented Oct. 19, 1909.

wisses f. 16

ANREW, s. mum ce., rnovmuwoaknuul. www. c.

devcemeo( van fy UNITED sTATEs PATENT oEEIcE.

GRACE A. TWIFORD, 0F POMONA, CALIFORNIA, ADMINISTRATRIX OF NICHOLAS S.TIFORD, DECEASED.

FLOW-REGULATING DEVICE.

Specification of Letters Patent.

Application led October 12, 1907.

Patented Oct. 19, 1909.

Serial No. 397,211.

To all whom it may concern:

designates bolts by which said plate 25 and Be it known that NICHOLASS.' TwIEoRD, i valve-seatgasket 26 are fastened to the top deceased,late a citizen of the United States, and resident of Pomona, in thecounty of Los Angeles and State of California, did invent a new anduseful Flow-Regulating Device, of which the following is aspecification.

The object of this invention is to provide superior automatic means forregulating the flow of liquid from a pipe under varying pressures forirrigation and for other purposes.

The accompanying drawings illustrate the invention.

Figure 1 is a fragmental View of a flowregulating device embodying thisinvention. Fig. 2 is a plan of the device shown in Fig. l, omitting thefloat. Fig. 3 is an enlarged vertical sectional detail of theHow-regulator.

1 indicates a reservoir subject to variations of level of the liquidcontained therein; 2 is a pipe leading therefrom; 3 is a floatchamber;4, a weir chamber; 5, the head-box for a distributing conduit 6; 7 is avalve-` case in the float-chamber 3, and provided with an inlet 8leading from the pipe 2 and with upper and lower outlets 9, 10, so thatwater flowing through the pipe 2 enters the valve-case 7 through theinlet 8 and flows outward from said valve-case, both up and down, asindicated by the curved arrows.

11 is an outlet from the float chamber 3 into the weir chamber 4, belowthe level of the weir 12.

13 is a valve-stem carrying two valves 14 and 15 for the outlets 9 and10 from the valve-case 7 16 is a float to which the valve-stem 13 issecured by suitable means, as the nuts 17, 18, which enable the float tobe adjusted relative to the valves 14, 15, if desired. One of saidvalves may also be adjustably mounted on the valve-stem as by nuts 19,20.

21 is a nut by which the lower valve 15 is fastened to the valve-stem13.

22 and 23 designate crossbar guides at the top and bottom of the valve,also for guiding the valve-stem 13. The valve-case 7 has a hole 24 inits top, of greater diameter than the upper valve 14, so that said valvemay be inserted and withdrawn from the valve-case.

25 is an annular valve-seat-plate, and 26 is a gasket between said seatand the top of the valve-case 7 to form, together with said plate, aseat for the upper valve 14. 27

flange 28 of the valve-case.

29 is a gasket on the upper face of the lower valve to seat against thevalve-seatiange 30 at the lower end ofthe valve-case.

The upper cross-bar guide 22 is held in place by the bolts 27, and thelower crossbar-guide 23 is held in place by bolts 31.

The Float-chamber 3 is of suflicient depth to allow a float carried byliquid within the float-chamber to operate the valves 14 and l5 to fullyopen and close the outlets 9, 10.

1n practice, the valve-plates 14, 15, and the float 1G 'willy be"adjusted relative to each other and to the outlets 9 and 10, so thatwhen the liquid rises to a determined height in the float chamber thevalves will stand at a determined distance from their respective seats.The llow at the outlet 11 from the floatchamber is dependent upon thecross-sectional area of said outlet 11 and its depth below the top ofthe weir 12 and below the level of the liquid in the float chamber 3.Consequently, whenever the pressure of the liquid in the pipe 2 isexcessive, the valve changes its position as the level of the liquid inthe valve-chamber 3 rises.

The area of the oulets 9 and 10 iscomparatively large, so that thevalves 14 and 15 in practice stand very close to their valveseats whenopen, whereby a slight variation in elevation of the float 16 will causea great variation in the flow of liquid; consequently, the valve isextremely sensitive, and a variation of, say, one-half inch more orless, in depth in the float-chamber 3 will cause a complete cutting 0Eof the flow.

By arranging the valves oppositely, as shown, one being outside and theother being inside the case, and both closing against their seats whenthe float rises, and receding from their seats when the lloat falls, asimple, effective operation is secured and the valve is perfectlybalanced against interfering pressures.

I claim 1. A float chamber provided with an outlet, a float in saidchamber, a valve-case in said chamber provided with openings at its topand bottom, liquid supply means opening into said valve case, cross-barguides, an annular valve seat plate fastened to the case above the topopening, cross-bar guides fastened to said case 'above said outletsrespectively, a valve stem extending through said guides and secured tosaid float, and valves secured to the valve stem for closing saidoutlets, one of said valves being adjustablyl mounted on the valve stem.c

2. The combination With a source of Water supply, of a pipecommunicating with the Water supply, a float chamber into which the pipedischarges, a Weir chamber connected to the float chamber, a head boxconneeted to the Weir chamber, a distributing conduit leading from thehead box, a float in the loat chamber, a valve ease in the float chamberwith openings at its top and bottom, said Valve-case being fixed uponthe dis-V charge end of the pipe leading into the float chamber; so thatthe Water pressure is between the openings; valves for said openings,said valves being connected together for simultaneous ope-ration andadjustable relative to each other, and said valves being connected tothe float.

connected together; a float for operating the valves, a iveir chambercommunicating With the float-chamber, a head box communicating with theWeir chamber, and a distributing-pipe leading from the head box. Y

In testimony Whe-reef, I have hereunto set my hand at Los AngelesCalifornia this 5th da;7 of October' 1907. GRACE A.. TVIFORD,

fldfmmstmtrim of the estema of Noholas S. l

Twz'fowl, deceased. In presence of- JAMES R. TOWNSEND, M. BnULAi-iTowNsnND.

